Revision as of 18:13, 24 January 2009

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Realtek RTL8181

The Realtek RTL8181 is a highly integrated System-on-a-Chip with a high-performance 32-bit RISC microcontroller, two Ethernet MACs and a WLAN 802.11b controller embedded onto a single chip. RTL8181P BGA version has a PCI Bridge which supports one external PCI/MiniPCI device.

The embedded Lexra LX5280 32-bit RISC CPU runs at up to 200MHz and features separate 8KB instruction and data caches.

Firmware

Most of the RTL8181-based devices comes with a simple bootloader and Linux as firmware. See the Minitar sourcecode and RTL8181-linux project. Seems, RTL8181 shares some code with ADM5120. They both use CSYS header format and some applications (i.e. setup), but RTL8181 firmware is Big-Endian.